JPS6373415A - Coordinate input device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] When inputting coordinates, the input device is made smaller by instructing to move a cursor displayed on the display device at a speed proportional to the direction and distance of the contact point of the pen with respect to the reference point. ,
This also makes the input work easier.

[Industrial application field]

The present invention relates to a coordinate input device, and more particularly to a coordinate input device that includes a base and a pen and inputs coordinates into a computer by moving a cursor on a display device by bringing the pen into contact with the surface of the base.

[Conventional technology]

The following coordinate input devices are available as described above. This is a so-called tablet device, and as shown in FIG. 5 (1), a pen 2 is brought into contact with the surface of a tablet 1, which is a base, and the contact point of the pen 2 on the surface of this tablet 1 is detected, and this point is detected. is detected as a point on the x-y coordinates, and the coordinates are specified at this contact position.

In this tablet device, as shown in FIG. 5(2), when moving the cursor 4 existing at position B on display device 3 to position C on display device 3 and inputting the coordinates of this position, , as shown in FIG. 5(1), move the pen touching position B on the tablet 1 corresponding to position B on the display device 3 to the position MC on the tablet 1 corresponding to the position MC on the display device 3. It was intended to be moved to position C'.

Here, there are various methods for detecting the position of the pen 2 on the tablet 1, such as a capacitive coupling method, an electromagnetic induction method, and an ultrasonic method.

[Problem that the invention seeks to solve]

By the way, in the conventional coordinate input device as mentioned above,
If you try to improve the accuracy of input coordinates, you will have to make the tablet larger, and you will not be able to place a keyboard device on it.

Another problem is that the operator must move the pen over a wide range and is easily fatigued.

[Means for solving problems]

In the present invention, the above-mentioned problem is solved in the coordinate input in which the pen is brought into contact with the surface of the base and the cursor on the display device is moved to input the coordinates into the computer.
As shown in the figure, the cursor is instructed to move in the direction θ from the reference point at a speed proportional to the distance gI from the reference point set at the center of the base of the pen's contact point (indication point). This is solved by a coordinate input device that emits

[Effect]

According to the present invention, the movement range of the pen can be made small when inputting coordinates, and the size of the base can also be made small.

〔Example〕

Embodiments of the coordinate input device according to the present invention will be described below based on the drawings.

2 to 4 show the principle of the coordinate input device according to the present invention. In this embodiment, the coordinate input device is
As shown in the figure, it consists of a tablet 10 which is a base, and a CRT 15 which is a display device which displays a pen and a cursor etc. which are brought into contact with the surface of the tablet 10 to input coordinates.

In this embodiment, the tablet 10 is smaller than the conventional one, and has a substantially square contact surface 12 formed on the upper part and a reference point 13 provided substantially in the center. A concentric circle 14 centered on the reference point 13 is drawn on this contact surface to serve as a reference line. In this embodiment, coordinates are input by bringing the pen 11 into contact with this contact surface 12. When a point on the contact surface 14 is touched with the pen 11, the cursor on the CRT 15 is , as shown in FIG. 1, moves from the currently displayed point A in the direction θ from the reference point to the contact point at a speed proportional to the distance @l to the reference point.

That is, the contact surface has nXn detection points, the coordinates of the above reference point are (n/2.n/2), and the coordinates of the pen contact point are (x, y), then the cursor on the CRT is the velocity in the angular direction V = α intersection = αr (x-n/2)2 + (y-n/2)2
Move with.

To stop the cursor, the pen 11 may be brought into contact with the reference point 13 of the tablet.

This allows the cursor on the CRT to be moved to any desired location. That is, to make the cursor move as shown in FIG. 5(2), move the pen 11 from the reference point in the direction from position B to position C to achieve the desired speed, as shown in FIG. The pen 11 is brought into contact with the reference point at a position C'' far from the reference point in time with the movement of the cursor, and the cursor is stopped.

In order to realize such movement, the present embodiment calculates the moving point of the cursor according to a flowchart as shown in FIG. That is, the position of the cursor after the unit display time is calculated based on the coordinates shown on the tablet.

Therefore, according to the coordinate input device according to the embodiment, the cursor can be moved to all points on the CRT at high speed even if the tablet size is not very large, and the range of movement of the pen is narrow, reducing operator fatigue. It can be made smaller.

〔Effect of the invention〕

As explained above, the present invention directs the movement of the cursor that indicates the coordinate input position in the direction from the reference point on the base where the pen touches, and at a speed proportional to the distance from the reference point on the base. Since the pen is moved at high speed, the cursor can be moved to all points on the display device even if the size of the base is not very large, and the range of movement of the pen is narrow, reducing operator fatigue. It has the effect of being able to

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is a flow chart showing the operation of an embodiment of the coordinate input device according to the present invention, FIG. 3 is a diagram showing an operation example of the embodiment, and FIG. FIG. 5, a perspective view showing an embodiment, is a diagram showing the operation of a conventional coordinate input device. lO...Tablet (base) 11...Pen 15...CRT (display device

Claims (1)

[Claims] A coordinate input device that includes a base and a pen and inputs coordinates into a computer by moving a cursor on a display device by touching the pen on the surface of the base, comprising: a reference point set on the base; Find the direction and distance of the contact point of the pen on the cursor, and
A coordinate input device characterized in that the cursor is moved by emitting a cursor movement instruction value so as to move at a speed corresponding to the distance.